CPC Subgroup
D21H 27/18 Paper- or board-based structures for surface covering
Full Title
Special paper not otherwise provided for, e.g. made by multi-step processes > Paper- or board-based structures for surface covering
2 direct subcodes
Child Classifications
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- D21H 27/20 Flexible structures being applied by the user, e.g. wallpaper (printed wallpapers B41M3/18; paperhanging B44C7/00; pregummed wallpaper C09J7/21)
- D21H 27/22 Structures being applied on the surface by special manufacturing processes, e.g. in presses
Top Applicants
Top 10 applicants by patent filingsfor class D21, 2013–2023, worldwide · Source: EPO PATSTAT
- VOITH PATENT DE 1,857
- STORA ENSO FI 1,552
- KEMIRA FI 1,173
- KIMBERLY-CLARK CORPORATION US 1,107
- VALMET TECHNOLOGIES FI 965
- VALMET SE 943
- P&G (PROCTER & GAMBLE COMPANY) US 941
- OMYA INTERNATIONAL CH 821
- UPM-KYMMENE CORPORATION FI 512
- SEIKO EPSON CORPORATION JP 501